Find the next number in the sequence

5 12 24 36 ?

Take one out and scratch my head, I am now black but once was red. What am I?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

I am an odd number. Take away a letter and I become even. What number am I?

What word is pronounced the same if you take away four of its five letters?

Can you move 2 matchsticks to form four equal sized squares.

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

What is more useful when it is broken?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?